Same airports matey...
No vacancies at BHD or BFS on the ramp until Summer 2011.. even then it will be temporary fixed term contracts ranging from 3-5 months for both Servisair and Menzies. So if you can get a job now outside of an agency, id go for it... not easy to get into the airports here now, and get kept.
Wont do any harm to write a letter to each company at both airports asking about recruitment and when they are set to have vacancies. They should write back, also id put your email address on the letter as they may reply quicker via that (and it saves them the postage fee